Top React Jobs in Sydney

Design, develop, and maintain scalable web applications using .NET backend and Angular/React frontend. Collaborate on requirements, implement RESTful APIs, optimize performance, debug, maintain documentation, support end-users, and work within CI/CD and DevOps workflows.

The Senior Frontend Engineer will develop features for a mobile application, collaborate with design and backend teams, and maintain code quality.

Build and maintain the BNB Chain middleware stack to simplify data fetching, transaction signing, and smart contract interactions. Create reusable SDKs and UI components for dApp developers, manage protocol integrations, and improve developer UX for wallet connectivity and transaction flows.

Build and maintain customer-facing and internal web applications (Megaport Portal) using a modern frontend stack. Implement features with Vue 3/TypeScript, ensure accessibility and responsive design, integrate web services, improve architectures and processes, and write unit/integration/end-to-end tests using Playwright and Vitest.

Lead OKX's social feed recommendation engineering: iterate ranking models to boost retention and trading conversion; build cross-domain intent and user profiling systems; roadmap Transformer-to-generative recommendation; integrate LLM Agent paradigms; own large-scale distributed training, real-time feature engineering, and latency-optimized inference.

Lead and own frontend engineering across core crypto products (Trading, Web3, Payments). Drive technical design, delivery, cross-team alignment, AI-infused product decisions, security standards (private key protection, frontend attack prevention), hiring, and operational excellence for high-concurrency, high-availability consumer products.

Design and develop scalable, secure frontend web applications for connected embedded systems. Lead frontend architecture, collaborate with backend/embedded teams, implement device provisioning, telemetry visualization, and remote management UIs. Optimize performance, accessibility, and maintainability; mentor engineers, participate in reviews, and drive frontend best practices.

Design, build, and maintain fullstack web application features using .NET and JavaScript/TypeScript; design APIs and data models; ensure reliability, performance, and observability; collaborate in agile teams; use data and AI tools to inform decisions; deliver end-to-end from design through production and mentor others.

Design, build, and maintain customer-facing web applications across frontend and backend. Collaborate in agile teams, balance speed and quality, use data and AI tools to inform development, own features end-to-end, and improve system reliability and performance.

Customer-facing engineer who onboards and integrates HappyRobot's AI platform, builds full‑stack features (React/TypeScript/Node, Python), implements and iterates on AI/ML (LLM prompting, transcribers, voice tuning), manages APIs/integrations, and partners cross-functionally to deliver scalable solutions under tight deadlines.

Join Escrow.com as a Senior Full Stack Software Engineer, tackling complex web applications and scalable features with diverse tech using Python, React.js, and AWS.

The Software Engineer will design and implement cloud-native applications, build APIs, work with databases, and collaborate with teams for innovative development.

The Senior Software Engineer will enhance the developer experience, drive product development, and lead cloud-native architecture initiatives, collaborating across teams to deliver high-quality software.

Seeking a Senior Full-Stack Mobile Developer to lead system architecture and development for AI-driven mobile applications, focusing on NLP and scalable systems.

Lead Software Engineer responsible for developing and maintaining web applications using Node.js, TypeScript, and React, while collaborating with cross-functional teams to ensure high-quality software solutions.

Seeking a Front-End Developer with 3+ years experience to develop React-oriented applications, optimize performance, and collaborate within a structured team.

Develop, test, and deploy front-end and back-end features for a remote monitoring dashboard, ensuring high-quality code and performance optimization.

Develop and maintain Digital Workplace tools, working closely with teams, performing testing, debugging, and technical research. Requires web development experience and familiarity with modern software architectures.

Work on the Growth team to rapidly design, build and iterate front-end experiments that validate activation ideas. Implement MVP tests, instrument analytics, choose the shortest technical paths, prioritize experiments, and ship quickly within an autonomous pod.

Design and deliver scalable solutions using C# and .NET. Mentor team members, improve existing systems, and ensure high engineering standards.

Responsible for overseeing the technical direction for identity management and access control systems. Will lead complex feature deliveries, conduct code reviews, and ensure team growth while focusing on customer needs and technical quality.

Build end-to-end product features across frontend, backend, and mobile (leaning frontend/React Native). Integrate with platform systems, partner with principal engineer and cross-functional teammates, contribute to AI-native features, make pragmatic trade-offs, ship quickly, and raise technical quality through code review and collaboration.

The Senior Software Engineer will develop and deliver high-quality code for stockbroking platforms, focusing on backend functionalities and integrating APIs while collaborating with stakeholders to align solutions with business objectives.

As a Software Engineer at Advanced Navigation, you'll develop software for high-performance navigation products. You'll collaborate with engineers on frontend applications, integrate with embedded systems, and manage project components to deliver quality solutions.

Build and maintain infrastructure, CI/CD pipelines, and monitoring for a scalable event-driven microservice platform. Optimize database performance (MongoDB/Postgres), manage Docker/Kubernetes environments, and support emerging MLOps and agentic AI infrastructure.